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coarse aggregate size pptx

Aggregates for Concrete Portland Cement Association

The maximum size of coarse aggregate used in concrete has a direct bearing on the economy of concrete. Usually more water and cement is required for small-size aggregates than for large sizes, due to an increase in total aggregate surface area. These graphs show that, for a given water-cement ratio, the amount of cement (or water) required

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ch5.pptx Materials for Civil and Construction Engineers

USC Aggregate Sizes Coarse aggregate material retained on a sieve with 4.75 mm openings Fine aggregate material passing a sieve with 4.75 mm openings Traditional Maximum aggregate size the largest sieve size that allows all the aggregates to pass Nominal maximum aggregate size the first sieve to retain some aggregate, generally less than 10% Superpave Maximum aggregate size one

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Aggregates SlideShare

Jan 14, 2015· Classification of aggregates Based on size: classified into 2 categories: • fine aggregates those aggregates which pass through 4.75 mm sieve or aggregates with size less than 5 mm. • Coarse aggregates those aggregates Passing through 75 mm sieve and entirely retained on 4.75 mm sieve OR those aggregates with size greater than 5 mm.

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AGGREGATES Weebly

According to size: Coarse aggregates: retained on 4.75mm sieve. max. size for plain concrete 150mm. max. size for reinforced concrete 60mm or less. Coarse aggregates: Graded aggregates. Single sized aggregates. Fine aggregates: passing through 4.75mm seive

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Lecture 1- Aggregates Construction Aggregate Concrete

According to Size: 1. Fine aggregate: d 5 mm 2. Coarse aggregate: d > 5 mm. Aggregates containing a whole range of particles are named as all-in or pit-run aggregates. Fine Aggregate. Sand and/or crushed stone < 5 mm. F.A. content usually 35% to 45% by mass or volume of total aggregate Coarse Aggregate. Gravel and crushed stone 5 mm typically

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PPT AGGREGATES PowerPoint presentation free to

Nominal maximum size of an aggregate the smallest sieve size through which the major portion of the aggregate must pass (90-100). Example Aggregate size number 7 has a maximum size of 19 mm, and a nominal maximum size of 12.5 mm. 26 Examples for determining Max and nominal Max size of aggregate Size number 37.7 mm (1 ½ in) 25 mm (1 in) 19 mm

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Aggregates ppt SlideShare

Apr 28, 2013· The finenessmodulus of an aggregate is roughlyproportional to the average size of particlesof the aggregates. 28. 29(OR)Index Number expressing the relativesizes of both coarse and fine aggregatesis called “Fineness Modulus”.Sand Fineness ModulusFine 2.2 to 2.6Medium 2.6 to 2.9Coarse 2.9 to 3.2Note:It is recommended that the finenessmodulus

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Coarse Aggregates: Types, Properites & Applications

1.Size of Coarse Aggregates: The size of the coarse aggregate depends on the use of the concrete is to be poured. Advertisement. For large-scale concreting operations without complex reinforcement, large aggregates of size 80 mm, 40 mm, 20 mm are used.

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Effect of different sizes of coarse aggregate on the

2.3. Coarse aggregate Crushed granite C.A available from local sources has been used. The different sizes (20mm, 16mm, 12.5mm and 10mm) of C.A are used and their Properties are given in Table: 1. Table: 1 Properties of Coarse aggregate S. No property Size of the C.A( mm) 20 16 12.5 10 1. Passing through IS Sieve, 20 16 12.5 10 2.

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Voids in coarse aggregates: An aspect overlooked in the

3. The bulk volume of coarse aggregate per unit volume of concrete depends on the maximum size of the coarse aggregate and the grading of the fine aggregate, expressed as the fineness modulus. The design starts with the selection of a water content for a given maximum size of coarse aggregate. Cement content is then found out simply

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AGGREGATES Weebly

According to size: Coarse aggregates: retained on 4.75mm sieve. max. size for plain concrete 150mm. max. size for reinforced concrete 60mm or less. Coarse aggregates: Graded aggregates. Single sized aggregates. Fine aggregates: passing through 4.75mm seive

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Lecture 1- Aggregates Construction Aggregate Concrete

According to Size: 1. Fine aggregate: d 5 mm 2. Coarse aggregate: d > 5 mm. Aggregates containing a whole range of particles are named as all-in or pit-run aggregates. Fine Aggregate. Sand and/or crushed stone < 5 mm. F.A. content usually 35% to 45% by mass or volume of total aggregate Coarse Aggregate. Gravel and crushed stone 5 mm typically

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PPT AGGREGATES PowerPoint presentation free to

Nominal maximum size of an aggregate the smallest sieve size through which the major portion of the aggregate must pass (90-100). Example Aggregate size number 7 has a maximum size of 19 mm, and a nominal maximum size of 12.5 mm. 26 Examples for determining Max and nominal Max size of aggregate Size number 37.7 mm (1 ½ in) 25 mm (1 in) 19 mm

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concretemixdesign-150329082925-conversion-gate01.pptx

concretemixdesign-150329082925-conversion-gate01.pptx Free ebook download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. the nominal maximum size of coarse aggregate, the workability and grading zone of fine aggregate is determined from fig 9.5 (a), 9.5 (b)

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SUPERPAVE AGGREGATES

Aggregates, without mineral filler, RAP, RAS, or additives, combined as used in the job-mix formula (JMF). • LA Abrasion requirement is 5% lower than 341 • Magnesium Sulfate Soundness is

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Effect of different sizes of coarse aggregate on the

2.3. Coarse aggregate Crushed granite C.A available from local sources has been used. The different sizes (20mm, 16mm, 12.5mm and 10mm) of C.A are used and their Properties are given in Table: 1. Table: 1 Properties of Coarse aggregate S. No property Size of the C.A( mm) 20 16 12.5 10 1. Passing through IS Sieve, 20 16 12.5 10 2.

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Standard Specification for Concrete Aggregates1

4.2.5 When the order is for coarse aggregate: 4.2.5.1 The grading (size number) (see 10.1 and Table 2), or alternate grading as agreed between the purchaser and aggre-gate supplier. 4.2.5.2 The class designation (see 11.1 and Table 3), 4.2.5.3 Whether the restriction on reactive materials in 11.2

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14. AGGREGATES cvut.cz

aggregate size designation of aggregate in terms of lower (d) and upper (D) sieve sizes expressed as d/D fine aggregate designation given to the smaller aggregate sizes with D less than or equal to 4 mm coarse aggregate designation given to the larger aggregate sizes with D greater than or equal to 4 mm and d greater than or equal to 2 mm

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Voids in coarse aggregates: An aspect overlooked in the

3. The bulk volume of coarse aggregate per unit volume of concrete depends on the maximum size of the coarse aggregate and the grading of the fine aggregate, expressed as the fineness modulus. The design starts with the selection of a water content for a given maximum size of coarse aggregate. Cement content is then found out simply

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EFFECTS OF AGGREGATE TYPE, SIZE, AND CONTENT ON

increase in aggregate size results in a decrease in the compressive strength of concrete. Cook (1989) showed that, for compressive strengths in excess of 69 MPa (10,000 psi), smaller sized coarse aggregate produces higher strengths for a given water-to-cement ratio. In fact, it is generally agreed that, although larger coarse aggregates can be used

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PPT Aggregates PowerPoint presentation free to

Aggregates Week 5 General Occupy 70-75% of the total volume Aggregates Week 5 General Occupy 70-75% of the total volume of concrete Defined as an inert mineral filler for OPC BS 882 Sizes Coarse aggregate e.g. Gravel 4 PowerPoint PPT presentation free to view

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Aggregates for Use In Concrete

• FM of coarse aggregate can also be calculated and can aid in blending coarse and medium size materials FM & Gradation are NOT the SAME 30 Fine Aggregate Gradation • Fineness Modulus (FM) should be between 2.3 and 3.1 • FM is empirical # determined by dividing the sum of percent retained on a standard series of sieves by 100

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Aggregate Stockpiling and Handling

“Aggregates 101” Aggregate Stockpiling and Handling IAAP 2019 Convention Education Program Segregation Size and Shape •Size ranges •Coarse •Midrange •Fine (sand) •Texture •Smooth surface •Rough surface •Shape Small Size Large Heavy Mass Lighter. 17 Segregation Segregation

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Aggregate Rugosity and Size Effect on Bituminous Mixes

Graphical presentations and illustrations were used as necessary. Unconfined compression test results showed that for one-size limestone coarse aggregate, the highest strength values were associated with No. 60 to No. 80 fines in the mix and for one-size rounded gravel coarse aggregate, the highest strength occurred when No. 200 to No. 270

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